Organic electro-luminescence display device and fabricating method thereof

ABSTRACT

An organic electro-luminescence display device and a fabricating method thereof for preventing a badness of a pad portion are disclosed. In the organic electro-luminescence display device, a first conductive layer is electrically connected to any at least one of first and second electrodes of the organic electro-luminescence array. A second conductive layer is provided on the first conductive layer. A dummy insulating pattern is provided to cover the first and second conductive layer and has a hole for exposing a portion of the second conductive layer.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Divisional of co-pending application Ser. No.11/058,607 filed on Feb. 16, 2005, and for which priority is claimedunder 35 U.S.C. §120; and this application claims priority ofApplication Nos. P2004-11583 and P2004-74579 filed in Korea on Feb. 20,2004 and Sep. 17, 2004, which are hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to an electro-luminescence display (ELD), andmore particularly to an organic electro-luminescence display device anda fabricating method thereof that are adaptive for preventing a badnessof a pad portion.

2. Description of the Related Art

Recently, there have been developed various flat panel display devicesreduced in weight and bulk that is capable of eliminating disadvantagesof a cathode ray tube (CRT). Such flat panel display devices include aliquid crystal display (LCD), a field emission display (FED), a plasmadisplay panel (PDP) and an electro-luminescence (EL) display, etc. Also,there have been actively processed studies for attempting to make a highdisplay quality and a large-dimension screen of the flat panel displaydevice.

In such flat panel display devices, the PDP has drawbacks in that it hasbeen highlighted as the most advantageous display device to make a lightweight, a small size and a large dimension screen because its structureand manufacturing process are simple, but it has low light-emissionefficiency and large power consumption. On the other hand, the activematrix LCD employing a thin film transistor (TFT) as a switching devicehas drawbacks in that it is difficult to make a large dimension screenbecause a semiconductor process is used, and in that it has large powerconsumption due to a backlight unit and has a large light loss and anarrow viewing angle due to optical devices such as a polarizing filter,a prism sheet, a diffuser and the like.

Meanwhile, the EL display device is largely classified into an inorganicEL display device and an organic EL display device depending upon amaterial of a light-emitting layer, and is a self-luminous device. Whencompared with the above-mentioned display devices, the EL display devicehas advantages of a fast response speed, large light-emissionefficiency, a large brightness and a large viewing angle. The inorganicEL display device has a larger power consumption than the organic ELdisplay device, and can not obtain a higher brightness than the organicEL display device and can not emit various colors such as red(R),green(G) and blue(B) colors. On the other hand, the organic EL displaydevice is driven with a low direct current voltage of tens of volts, andhas a fast response speed. Also, the organic EL display device canobtain a high brightness, and can emit various colors of red(R),green(G) and blue(B). Thus, the organic EL display device is suitablefor a post-generation flat panel display device.

FIG. 1 is a schematic section view showing a structure of a conventionalorganic EL display device, and FIG. 2 is a section view of the organicEL array taken along the I-I′ line in FIG. 1.

Referring to FIG. 1 and FIG. 2, the organic EL array 50 has a firstelectrode (or anode electrode) 4 and a second electrode (or cathodeelectrode) 12 provided on a substrate 2 in a direction crossing eachother.

A plurality of first electrodes 4 are formed on the substrate 2 in sucha manner to be spaced at a desired distance from each other. Aninsulating film 6 having an aperture for each EL cell area is formed onthe substrate 2 provided with the first electrode 4. On the insulatingfilm 6, a barrier rib 8 for making a separation of an organiclight-emitting layer 10 and the second electrode 12 to be formed thereonis positioned. The barrier rib 8 is provided in a direction crossing thefirst electrode 4, and has an overhang structure in which the upperportion thereof has a larger width than the lower portion thereof. Theorganic light-emitting layer made from an organic compound and thesecond electrode 12 are entirely deposited onto the insulating film 6provided with the barrier rib 8. The organic light-emitting layer 10expresses red(R), green(G) and blue(B) colors. Generally, the organiclight-emitting layer 10 is formed by patterning individual organicmaterials light-emitting red, green and blue colors for each pixel P.

As shown in FIG. 2, the organic light-emitting layer 10 includes a holeinjection layer 10 e, a hole carrier layer 10 d, a light-emitting layer10 c, an electron carrier layer 10 b and an electron injection layer 10a that are sequentially provided on the first electrode 4.

In such an organic EL display device, if a voltage is applied betweenthe first electrode 4 and the second electrode 12, then electrons (orcathodes) generated from the second electrode 12 are moved, via theelectron injection layer 10 a and the electron carrier layer 10 b, intothe light-emitting layer 10 c. Further, holes (or anodes) generated fromthe first electrode 4 are moved, via the hole injection layer 10 e andthe hole carrier layer 10 d, into the light-emitting layer 10 c. Thus,the light-emitting layer 10 c forms exiton by a re-combination ofelectrons and holes fed from the electron carrier layer 10 b and thehole carrier layer 10 d. Then, the exiton is again excited into a basestate to emit a certain energy of light, via the first electrode 4, intothe exterior, thereby displaying a picture.

The organic EL array 50 has a property liable to be deteriorated bymoisture and oxygen. In order to overcome this problem, an encapsulationprocess is carried out. Thus, the substrate 2 provided with the organicEL array 50 is joined to a cap 28 by a sealant 26.

FIG. 3 shows a pad portion of the conventional organic EL displaydevice.

A pad 37 of the pad portion of the organic EL display device shown inFIG. 3 is electrically connected to a signal supplying film 32 such as achip on film (COF) and a tape carrier package (TCP), etc. with having ananisotropic conductive film 30 therebetween for the purpose of receivinga driving signal from the exterior thereof. The pad 37 has a structurein which a transparent conductive layer 36 connected to the firstelectrode 4 or the second electrode 12 of the organic EL array 50 andopaque conductive layer 34 are layer-built. Herein, indium-tin-oxide(ITO), indium-zinc-oxide (IZO), indium-tin-zinc-oxide (ITZO) or the likeis used as the transparent conductive layer 36 while molybdenum (Mo),etc. is used as the opaque conductive layer 34. Further, a silicon film38 for preventing an oxidation of the opaque conductive layer 34 causedby moisture and oxygen, etc. is provided on the opaque conductive layer34.

Meanwhile, the opaque conductive film 34 provided at the pad portion ofthe conventional organic EL display device is corroded due to moisture(H₂O) and oxygen (O₂), etc., thereby frequently causing a poor padproblem in that a driving is not applied via the signal supplying film32.

This will be described in detail below.

Generally, the opaque conductive layer 34 made from molybdenum (Mo),etc. has a property of oxidation or corrosion when it is exposed tomoisture and oxygen, etc. Such an opaque conductive layer 34 is exposedto moisture or oxygen in the atmosphere as shown in FIG. 4 in the courseof carrying out a joint process of the substrate 2 provided with theorganic EL array 50 to the cap 28 and a connection process of the pad 37to the signal supplying film 32 with having the ACF 30 therebetween,etc. The exposed opaque conductive layer 34 undergoes oxidation. Also,after forming the silicon film 38, oxygen and moisture are permeatedinto an interface among the silicon film 38, the transparent conductivelayer 36 and the opaque conductive layer 34, thereby causing anoxidation of the opaque conductive layer 34. Such an oxidationaccelerates an galvanic corrosion resulted from a difference of voltagesapplied to each pad 37, thereby causing a poor pad portion problem inthat an external driving signal is not applied to the organic EL array50.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide anorganic electro-luminescence display device and a fabricating methodthereof that are adaptive for preventing a badness of a pad portion.

In order to achieve these and other objects of the invention, a padportion of an organic electro-luminescence display device according toone aspect of the present invention includes a first conductive layerelectrically connected to any at least one of first and secondelectrodes of the organic electro-luminescence array; a secondconductive layer provided on the first conductive layer; and a dummyinsulating pattern provided to cover the first and second conductivelayer and having a hole for exposing a portion of the second conductivelayer.

The organic electro-luminescence display device further includes a capfor packaging the organic electro-luminescence array; and a signalsupplying film electrically connected, via said hole for exposing thesecond conductive layer, to the pad.

The organic electro-luminescence display device further includes asilicon film provided at an interface area between the dummy insulatingpattern and the substrate.

In the organic electro-luminescence display device, the organicelectro-luminescence array includes an insulating film for partiallyexposing the first electrode to define a light-emitting area, and saidinsulating film is formed from the same material as the dummy insulatingpattern.

In a method of fabricating an organic electro-luminescence displaydevice, having a process of forming a pad portion for transferring adriving signal to an organic electro-luminescence array, according toanother aspect of the present invention, the process of forming said padportion includes the steps of forming a first conductive layerelectrically connected to any at least one of first and secondelectrodes of the organic electro-luminescence array on a substrate;forming a second conductive layer on the first conductive layer; andforming a dummy insulating pattern provided to cover the first andsecond conductive layer and having a hole for exposing a portion of thesecond conductive layer.

The method further includes the steps of joining a cap with thesubstrate to make a packaging of the organic electro-luminescence array;and connecting a signal supplying film, via said hole for exposing thesecond conductive layer, to the pad.

The method further includes the step of forming a silicon film at aninterface area between the dummy insulating pattern and the substrate.

In the method, the organic electro-luminescence array includes aninsulating film for partially exposing the first electrode to define alight-emitting area, and said insulating film is simultaneously formedfrom the same material as the dummy insulating pattern.

An organic electro-luminescence display device according to stillanother aspect of the present invention includes an organicelectro-luminescence array; and a pad for applying a driving signal tothe organic electro-luminescence array and having a structure in which afirst conductive layer and a second conductive layer exposing a portionof the first conductive layer are built.

The organic electro-luminescence display device further includes apackaging plate for enclosing the organic electro-luminescence array; asignal supplying film electrically connected to the pad; and a siliconlayer provided on the first conductive layer.

In the organic electro-luminescence display device, the secondconductive layer is partially removed from an area other than thepackaging plate and the signal supplying film.

In the organic electro-luminescence display device, the first conductivelayer contains an oxide, and the second conductive layer containsmolybdenum (Mo).

In the organic electro-luminescence display device, the organicelectro-luminescence array has an anode electrode and a cathodeelectrode, and the first conductive layer is formed from the samematerial as any at least one of the anode electrode and the cathodeelectrode.

A method of fabricating an organic electro-luminescence display deviceaccording to still another aspect of the present invention includes thesteps of forming an organic electro-luminescence array; and forming apad having a structure in which a first conductive layer extended fromthe organic electro-luminescence array and a second conductive layerexposing a portion of the first conductive layer are built.

The method further includes the steps of joining a packaging plate withthe substrate in such a manner to enclose the organicelectro-luminescence array; connecting a signal supplying film to thepad for the purpose of applying an external driving signal to theorganic electro-luminescence array; and forming a silicon layer on thefirst conductive layer.

In the method, the second conductive layer is partially removed from anarea other than the packaging plate and the signal supplying film.

In the method, the first conductive layer contains an oxide, and thesecond conductive layer contains molybdenum (Mo).

In the method, the organic electro-luminescence array has an anodeelectrode and a cathode electrode, and the first conductive layer isformed from the same material as any at least one of the anode electrodeand the cathode electrode.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other objects of the invention will be apparent from thefollowing detailed description of the embodiments of the presentinvention with reference to the accompanying drawings, in which:

FIG. 1 is a schematic section view showing a structure of a conventionalorganic electro-luminescence display device;

FIG. 2 is a section view of the organic electro-luminescence array takenalong the Z-Z′ line in FIG. 1;

FIG. 3 is a section view showing a pad portion of the conventionalelectro-luminescence display device;

FIG. 4 depicts a badness of the conventional pad portion;

FIG. 5 is a section view showing a portion of an organicelectro-luminescence display device according to a first embodiment ofthe present invention;

FIG. 6 is a detailed perspective view of the pad portion A shown in FIG.5;

FIG. 7 is a section view of the pad portion taken along the II-V′ linein FIG. 5;

FIG. 8 is a flow chart representing a method of fabricating the organicelectro-luminescence display device according to the first embodiment ofthe present invention;

FIG. 9 is a section view showing a portion of an organicelectro-luminescence display device according to a second embodiment ofthe present invention; and

FIG. 10 is a flow chart representing a method of fabricating the organicelectro-luminescence display device according to the second embodimentof the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Reference will now be made in detail to the preferred embodiments of thepresent invention, examples of which are illustrated in the accompanyingdrawings.

Hereinafter, the preferred embodiments of the present invention will bedescribed in detail with reference to FIGS. 5 to 10.

FIG. 5 is a section view showing a portion of an organicelectro-luminescence (EL) display device according to a first embodimentof the present invention, FIG. 6 is a detailed perspective view of thepad portion A shown in FIG. 5, and FIG. 7 is a section view of the padportion taken along the II-II′ line in FIG. 5.

An organic EL array 150 in the organic EL display device according tothe first embodiment of the present invention shown in FIG. 5 to FIG. 7has the same structure as that in the conventional organic EL displaydevice shown in FIG. 1 to FIG. 3.

Referring to FIG. 5 to FIG. 7, the organic EL array 150 has a firstelectrode (or anode electrode) 104 and a second electrode (or cathodeelectrode) 112 provided on a substrate 102 in a direction crossing eachother.

A plurality of first electrodes 104 are formed on the substrate 2 insuch a manner to be spaced at a desired distance from each other. Aninsulating film 106 having an aperture for each EL cell area is formedon the substrate 102 provided with the first electrode 104. On theinsulating film 106, a barrier rib 108 for making a separation of anorganic light-emitting layer 110 and the second electrode 112 to beformed thereon is positioned. The barrier rib 108 is provided in adirection crossing the first electrode 104, and has an overhangstructure in which the upper portion thereof has a larger width than thelower portion thereof. The organic light-emitting layer 110 made from anorganic compound and the second electrode 112 are entirely depositedonto the insulating film 106 provided with the barrier rib 108.

A pad 137 of the pad portion of the organic EL display device iselectrically connected to a signal supplying film 132 such as a chip onfilm (COF) and a tape carrier package (TCP), etc. with having ananisotropic conductive film (ACF) 30 therebetween for the purpose ofreceiving a driving signal from the exterior thereof.

The pad 137 includes a transparent conductive layer 136 connected to thefirst electrode 104 or the second electrode 112, an opaque conductivelayer 134 for enhancing a conductivity of the transparent conductivelayer 136, and a dummy insulating pattern 175 for covering thetransparent conductive layer 136 and the opaque conductive layer 134.

The dummy insulating pattern 175 plays a role to prevent oxidation orcorrosion of the opaque conductive layer 134. Specifically, the dummyinsulating pattern 175 is provided to cover the opaque conductive layer134 made from molybdenum (Mo) weak to moisture (H₂O) and oxygen (O₂),etc., thereby allowing the opaque conductive layer 134 to be exposed tomoisture (H₂O) and oxygen (O₂), etc.

The dummy insulating pattern 175 is provided with a contact hole 180 forexposing a portion of the opaque conductive layer 134, and the signalsupplying film 132 is connected to the opaque conductive layer 134exposed through the contact hole 180, thereby allowing it to beelectrically connected to the pad 137.

Herein, indium-tin-oxide (ITO), indium-zinc-oxide (IZO),indium-tin-zinc-oxide (ITZO) or the like is used as the transparentconductive layer 136 while molybdenum (Mo), etc. is used as the opaqueconductive layer 134. The dummy insulating pattern 175 is formed fromthe same material as the insulating pattern 106 of the organic EL array150.

Furthermore, a silicon film 36 is provided on the dummy insulatingpattern 175 or an interface area between the substrate 102 and the dummyinsulating pattern 175, thereby reinforcing a protection of the opaqueconductive layer 134.

As described above, the pad portion of the organic EL display deviceaccording to the first embodiment of the present invention includes thetransparent conductive layer 136 and opaque conductive layer 134electrically connected to any at least one of the first and secondelectrodes 104 and 112 of the organic EL array 150, and the dummyinsulating pattern 175 provided to cover the transparent conductivelayer 136 and the opaque conductive layer 134 and having the contacthole 180 for exposing a portion of the opaque conductive layer 134.Accordingly, it becomes possible to protect the opaque conductive layer134 from moisture and oxygen, etc., thereby preventing a badness of thepad portion.

FIG. 8 is a flow chart representing a method of fabricating the organicelectro-luminescence display device according to the first embodiment ofthe present invention.

Firstly, at a step S2, the transparent conductive layer 136 connected toeach of the first electrode 104 and the second electrode 112 of theorganic EL array 150 is formed on the substrate 102. Herein,indium-tin-oxide (ITO), indium-zinc-oxide (IZO), indium-tin-zinc-oxide(ITZO) or the like is used as the transparent conductive layer 136.

At a step S4, an opaque conductive material is entirely deposited ontothe transparent conductive layer 136 by a deposition technique such asthe sputtering, etc. and then is patterned by the photolithography andthe etching process using a mask to thereby provide the opaqueconductive layer 134.

Thereafter, at a step S6, a photosensitive insulating material isdeposited onto the substrate 102 provided with the first electrode, thetransparent conductive layer 136 and the opaque conductive layer 134 andthen is patterned by the photolithography, thereby providing theinsulating film 106 of the organic EL array 150 and providing the dummyinsulating pattern 175 on the opaque conductive layer 134. Theinsulating film 106 partially exposes the first electrode 104 to definea light-emitting area, whereas the dummy insulating film 175 is providedto cover the transparent conductive layer 136 and the opaque conductivelayer 134 and has the contact hole 180 for exposing a portion of theopaque conductive layer 134.

Accordingly, there is provided the pad 136 having a structure in whichthe transparent conductive 136, the opaque conductive layer 134 and thedummy insulating pattern 175 are built.

Subsequently, at a step S8, the cap 128 is joined to the substrate 102by the encapsulation process. At a step S10, the pad 137 is electricallyconnected, via the ACF 130, to the signal supplying film 132. In otherwords, the ACF 130 is connected, via the contact hole 180 of the dummyinsulating pattern 175, to the opaque conductive layer 134 of the pad137.

Finally, at a step S12, the silicon film 138 is provided on the dummyinsulating pattern 175 or at an interface area between the dummyinsulating pattern 175 and the substrate 102.

FIG. 9 is a section view showing a portion of an organicelectro-luminescence (EL) display device according to a secondembodiment of the present invention.

Referring to FIG. 5 to FIG. 7, the organic EL array 150 has a firstelectrode (or anode electrode) 104 and a second electrode (or cathodeelectrode) 112 provided on a substrate 102 in a direction crossing eachother.

A pad 137 of the pad area of the organic EL display device iselectrically connected to a signal supplying film 132, for example,connection films such as a tape carrier package (TCP), etc. with havingan anisotropic conductive film (ACF) 30 therebetween for the purpose ofreceiving a driving signal from the exterior thereof.

The pad 137 has a structure in which a transparent conductive layer 136connected to a first electrode 104 or a second electrode 112 of anorganic EL array 150 and an opaque conductive layer 134 for enhancing aconductivity of the transparent conductive layer 136 are built. Herein,the opaque conductive layer 134 is provided on the transparentconductive layer 136 in such a manner to expose a portion of thetransparent conductive layer 136. More specifically, the transparentconductive layer 136 is provided to expose the transparent conductivelayer 136 at an area other than its area overlapping with a packagingplate 128 and a TCP 132. A silicon layer 134 for preventing an oxidationof the opaque conductive layer 134 caused by moisture and oxygen, etc.is provided on the opaque conductive layer 134 and the transparentconductive layer 136.

As described above, in the pad area of the organic EL display deviceaccording to the second embodiment of the present invention, the opaqueconductive layer 134 is provided at an area overlapping with thepackaging plate 128 and the TCP 132 on the transparent conductive layer136 connected to any one of the first and second electrodes 104 and 112.Thus, the transparent conductive layer 136 is provided in such a mannerto be exposed at an area non-overlapping with the package plate 128 andthe TCP 132 of the pad area, so that it becomes possible to betterprevent an oxidation of the opaque conductive layer 134 caused bymoisture (H₂O) and oxygen (O₂), etc. in comparison with the prior art.

This will be described in detail below.

Generally, the opaque conductive layer 134 made from molybdenum (Mo) hasan oxidation property when it is exposed to moisture and oxygen, etc.,whereas the transparent conductive layer 136 made from indium-tin-oxide(ITO), indium-zinc-oxide (IZO), indium-tin-zinc-oxide (ITZO) or the likeis not oxidized due to oxygen and moisture, etc. In other words, thetransparent conductive layer 136 contains an oxide to have a propertyrelatively strong to an acid in comparison with the opaque conductivelayer 134.

The transparent conductive layer 136 is not oxidized even though it isexposed to moisture and oxygen in the atmosphere in the course ofcarrying out a joint process of the substrate 102 provided with theorganic EL array 150 to the packaging plate 128 and a connection processof the pad 137 and the TCP 132 with having the ACF 130 therebetween. Onthe other hand, the opaque conductive layer 134 is not exposed tomoisture and oxygen owing to the packaging plate 128 and the TCP 132.Thus, any conductive layer is not oxidized, so that a galvanic corrosioncaused by a difference of voltages applied to each pad 37 also is notgenerated. Accordingly, it becomes possible to prevent a pad badness.

FIG. 10 is a flow chart representing a method of fabricating the organicEL display device according to the second embodiment of the presentinvention.

Firstly, at a step S32, the organic EL array 150 is formed on thesubstrate 150 and, at the same time, the transparent conductive layer136 connected to each of the first electrode 104 and the secondelectrode 112 of the organic EL array 150 is formed on the substrate102. Herein, indium-tin-oxide (ITO), indium-zinc-oxide (IZO),indium-tin-zinc-oxide (ITZO) or the like is used as the transparentconductive layer 136.

At a step S34, an opaque conductive material is entirely deposited ontothe transparent conductive layer 136 by a deposition technique such asthe sputtering, etc. and then is patterned by the photolithography andthe etching process using a mask to thereby provide the opaqueconductive layer 134. In this case, the opaque conductive layer 134 isprovided on an area to be overlapped with the packaging plate 128 to bejoined with the substrate 102 and the TCP 132 electrically connected tothe pad 137. Thus, the transparent conductive layer 136 at an areanon-overlapping with the packaging plate 128 and the TCP 132 is exposed.Accordingly, there is provided the pad 137 having a structure in whichthe transparent conductive layer 136 and the opaque conductive layer 134are built.

Subsequently, at a step 36, the packaging plate 128 is joined to thesubstrate 102 by an encapsulation process. At a step 38, the pad 137 iselectrically connected, via the ACF 130, to the TCP 132.

Finally, at a step S40, the silicon layer 138 is formed on the exposedtransparent conductive layer 136.

In the organic EL display device and the fabricating method according tothe embodiments of the present invention, the opaque conductive layer134 is provided in such a manner to expose a portion of the transparentconductive layer 136 at an area overlapping with the packaging plate 128and the TCP 132 on the transparent conductive layer 136 for applying adriving signal to the organic EL array. Thus, the opaque conductivelayer 134 is not exposed to moisture (H₂O) and oxygen (O₂), etc.,thereby preventing an oxidation of the opaque conductive layer 134.Accordingly, it becomes possible to prevent a pad badness such as ageneration of a galvanic corrosion caused by a difference of voltagesapplied to each pad 137.

As described above, according to the present invention, the pad portionincludes the transparent conductive layer and the opaque conductivelayer, and the dummy insulating pattern for covering the transparentconductive layer and the opaque conductive layer to protect the opaqueconductive layer from moisture and oxygen, etc. Accordingly, it becomespossible to prevent a pad portion badness such as oxidation or corrosionof the opaque conductive layer.

Furthermore, according to the present invention, the opaque conductivelayer is provided on the transparent conductive layer extended from theorganic EL array in such a manner to expose a portion of the transparentconductive layer and overlap with the packaging plate and the TCP. Thus,the opaque conductive layer is not exposed to moisture (H₂O) and oxygen(O₂), etc., thereby preventing an oxidation of the opaque conductivelayer. Accordingly, it becomes possible to prevent a pad portionbadness.

Although the present invention has been explained by the embodimentsshown in the drawings described above, it should be understood to theordinary skilled person in the art that the invention is not limited tothe embodiments, but rather that various changes or modificationsthereof are possible without departing from the spirit of the invention.Accordingly, the scope of the invention shall be determined only by theappended claims and their equivalents.

1. An organic electro-luminescence display device, comprising: anorganic electro-luminescence array; and a pad for applying a drivingsignal to the organic electro-luminescence array and having a structurein which a first conductive layer and a second conductive layer exposinga portion of the first conductive layer are built.
 2. The organicelectro-luminescence display device according to claim 1, furthercomprising: a packaging plate for enclosing the organicelectro-luminescence array; a signal supplying film electricallyconnected to the pad; and a silicon layer provided on the firstconductive layer.
 3. The organic electro-luminescence display deviceaccording to claim 2, wherein the second conductive layer is partiallyremoved from an area other than the packaging plate and the signalsupplying film.
 4. The organic electro-luminescence display deviceaccording to claim 1, wherein the first conductive layer contains anoxide, and the second conductive layer contains molybdenum (Mo).
 5. Theorganic electro-luminescence display device according to claim 1,wherein the organic electro-luminescence array has an anode electrodeand a cathode electrode, and the first conductive layer is formed fromthe same material as any at least one of the anode electrode and thecathode electrode.